[PATCH] md: export rdev->data_offset via sysfs
Signed-off-by: Neil Brown <neilb@suse.de>
Acked-by: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/Documentation/md.txt b/Documentation/md.txt
index d525fff..866a1a8 100644
--- a/Documentation/md.txt
+++ b/Documentation/md.txt
@@ -244,6 +244,12 @@
it currently fills. This can only be set while assembling an
array. A device for which this is set is assumed to be working.
+ offset
+ This gives the location in the device (in sectors from the
+ start) where data from the array will be stored. Any part of
+ the device before this offset us not touched, unless it is
+ used for storing metadata (Formats 1.1 and 1.2).
+
An active md device will also contain and entry for each active device
in the array. These are named
